One of the six Fu organs. The San Jiao is a series of pathways in the human body that are used to distribute fluids and Yuan Qi throughout the body. The human body is divided into three areas, or Jiaos. They are the Upper Jiao, the Middle Jiao, and the Lower Jiao. The San Jiao is a good example of how the Zang Fu organs are not the same as the organs in a scientific context. The functions of the San Jiao can be attributed to no single organ in Western medicine. The organs and tissues that share the functions of the San Jiao are the lymphatics, the fascial system, and the hypothalamus, among others.